Island



(No Model.)

0. D. ROGERS.

NAIL, BOLT, &c. No. 405,681.

Patented June 18, 1889.

IEI I.

INVENTUHu (Months D. owns;

' WITNESSES- J m c v UNITED STATES PATENT OFFICE.

CHARLES E. ROGERS, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO THE AMERICAN SCREIV COMPANY, OF SAME PLACE.

NAIL, BOLT, aw.

SPECIFICATION forming part of Letters Patent No. 405,681, dated June 18, 1889.

Application filed November 9, 1888. Serial No. 290,375. (No model.)

To all whom it may concern.- Fig. is a cross-sectional view taken. through Be it known that I, CHARLES D. ROGERs, a the bolt-head on line mat; and Fig. 6 is an encitizen of the United States, residing at Provilarged central sectional view taken through dence, in the county of Providence and State the upper portion of a nail, or on line at m of 5 of Rhode Island, have invented certain new Fig. 3.

and useful Improvements in Nails, Bolts, 850.; A more specific reference to the invention andIdo hereby declare the following to be a shown by the drawings is as follows:

full, clear, and exact description of the ina designates the improved nail or bolt as a vention, such as will enable others skilled in whole, I) indicating the shank portion, which 10 the art to which it appertains to make and may be of any desired form, as usual as, for use the same, reference being had to the acexample, it may be a horseshoe-nail, a wire companying drawings, and to letters or fignail, a cut nail or tack, or even a screwures of reference marked thereon, which form threaded shank, shown by Fig. 4. The a part of this specification. head portion h of said nails, bolts, &c., is

I5 My invention relates to bolts, nails, &c.; provided with a series of narrow grooves c, and it consists, essentially, in providing the the same commencing at the root of the shank, heads thereof with two or more grooves exwhere the enlargement forming the head betending longitudinally of the head and havgins, and extending outwardly therefrom into ing the bottom of the grooves substantially the head, the bottom of the grooves being 20 in line with and forming a continuation of substantially in line with the surface of the the plain or shank portion of the nail. shank, as clearly shown. The grooves, of

The objects I seek to attain by means of which there maybe two or more, terminate my improvement are to provide nails and at the periphery of the end of the head It in bolts with means whereby the holding qualia concave form.

25 ties are increased and at the same time ren- A means for producing the grooves c is to dering such nails, &c., less liable to turn axiprovide the die which gives shape to the head ally in driving. These objects I practically with narrow tongues or ribs having the counaccomplish by the employment of grooves terpart of the grooves. Now by the employformed in the under side of the head of the mentof a suitable hammer the end of the 0 nail, as before stated. My improved nails and stock or metal to be made into nails, &e., and bolts are more particularly adapted to be in extending beyond the face of the die, is upserted into materials such as wood, soft set or swaged into the die-cavity, the head MU metals, horn, 850., although the sharp edges thus produced upon the nail being more 110- of the grooves act to prevent the bolt from mogeneous, and by virtue of the compressed 35 turning when inserted into metal having a metal along the grooves being stronger in a countersunk hole therein substantially the torsional direction, although using a less counterpart of the head of the bolt. quantity of metal in the head than is given In an application for Letters Patent filed to nails as commonly made. by me in the United States Patent Office July I claim as my invention-- 0 5, 1888, Serial No. 279,052, I have therein de- 1. As an improved article of manufacture, o scribed and claimed dies of peculiar constructhe nail, belt, or other headed blank hereintion adapted to produce the improved nails, before described, having two or more narrow &c., forming the subject of the present ingrooves formed in the surface of the under vention. side of the headed portion, said grooves com- 45 In the accompanyin sheet of drawings, mencing at or near the junction of the shank Figures 1 and 2 represent front and side eleand head and extending longitudinally therevations of a horseshoe nail provided with my from substantially in line with the shank and improvement. Fig. 3 isaperspective view of terminating at the edge or periphery of the a Wire nail having a grooved head. Fig. 4 head, substantially as set forth.

50 is a similar view of a bolt thus improved. 2. The headed nail or blank hereinbefore 10o described, having the surface of the under side of the head provided with a series of surface of the under side of the head h and 10 terminating at the edge or periphery of the longitudinally-arranged grooves, the bottoms head, substantially as shown and set forth.

of which form a continuation of the shanks surface and terminate in well-rounded curves, substantially as set forth.

3. The improved nail or blank a hereinbefore described, having a series of grooves c, rectangular in cross-section, formed in the In testimony whereof I have affixed my signature in presence of two Witnesses.

CHARLES D. ROGERS. WVitnesses:

GEO. H. REMINGTON, JOSEPH SANFORD. 

